Nail-driving apparatus.



No. 896,316. PATENTED AUG. 18, 19os E. A. PARKER. NAIL DRIVING APPARATUS.

APPLICATION FILED JUNE 20, 1907.

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ve an Jab-ken PATENTED AUG. 18, 1908.

E. A, PARKER. NAIL DRIVING APPARATUS.

APPLICATION 'IIL'ED JUNE 20, 1907.

2 SHEETS-SHEET 2.

I 2 i A M I 5/ 5 UNITED STATES PATENT oFFioE.

ELBERT A. PARKER, OF HOLLISTON, MASSACHUSETTS, ASSIGNOR TO FRAMINGHAM SHOE COMPANY, OF FRAMINGHAM, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

NAIL-DRIVING- APPARATUS.

- Specification of Letters Patent.

Patented Aug. 18,1908.

To all whom it may concern:

Be it known that I, ELBERT A. PARKER, a citizen of the United States, residing in Holliston, in the county of MiddleseX and State of Massachusetts, have invented an Improvement in NailDriving Apparatus, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention has for its object the production of a novel apparatus for driving nails, tacks or other fastenings with heads, the apparatus being chiefly used for driving tacks in the process of lasting boots and shoes, but the apparatus may be used to drive nails or tacks in any substance.

I have herein chosen to illustrate my in vention as embodied in a so-called hand tacker. In my apparatus I employ a raceway having arranged at its delivery end a nail support on to which is delivered the under sides of the heads of the nails as they leave the raceway, and with this raceway and support I employ a tubular nail guide having a longitudinal slot at one side through which may pass the shanks of the nails leaving the raceway to be sustained by the nail support. After the nail has been delivered to the nail support, the nail-guide is partially revolved that a portion thereof alongside its slot may be interposed between the shank of the nail sustained by the nail support and the endrnost nail of the raceway, and then the support is withdrawn and the nail is driven, the support being then returned to its normal operative position while the nail-guide is put into its normal position with its slot in line with the nailguidinggroove of the raceway ready for the reception of another'nail.

Figure 1 is a partial longitudinal section of my novel nailing apparatus; Fig. 2 is a partial section at right angles to the section of Fig. 1, looking at the apparatus from the left of Fig. 1; Fig. 3 a sectional detail of the lower end of the apparatus with the parts shown in Fig. 1 in a different position, the driver being shownat the end of its down stroke; Fig. 3 is a section of Fig. 3 in the line a; Fig. 4 is a similar detail showing the opposite side of the parts represented in Fig. 3, the driver occupying its elevated position; Fig. 5 is a detail showing part of the raceway, nose and driver and coacting parts; Fig. 5

shows the cover detached; Fig. 6 is a section in the dotted line :0 Fig. 3 showing the lower end of the raceway together with the nail support, nail-guide and their actuating means; Fig. 7 is a detail similar to that shown guide and driver in a different position; Fig. 7 is a detail in top view of the nail-support; Fig. 8 is a detail showing the lower end of one of the raceway plates without its moving parts; Fig. 9 is a section also in line r Fig. 3, similar to Fig. 6, but with the nail support and nail-guide and their actuating parts in a different position, the position shown in Fig. 7; Fig. 10 is a detail showing the nail-guide occupying its normal-nail-receiving position; and Fig. 11 shows the same guide in its abnormal or naildriving position. 1

The hand-piece or barrel A of the apparatus has an extension A provided, as shown, with a bottom flange a on which rests the underside edges, see Figs. 3 and 3 of the raceway plates. The lower end of the barrel A is provided with a conical portion A represented as having a flange A that enters the lower end of the barrel. The upper end of the barrel is closed by a top-plate A having a hole to receive the driver-bar A provided with a driver A The top-plate A is shown as provided with studs 1) each receiving one end of a tension spring 5 connected at its opposite end .to a stud b carried by the driver-bar, said springs acting normally to retain the driverin its elevated position, Figs. 1, 4 and 5. The driver-bar has a shoulder 19 that meets the top-plate A and arrests the driver in its elevated position. The shoulder has a screw 6 that sustains loosely the upper end of an actuator 19 having a slot 1) that is entered by one of the studs 6 extended from the driverban'the lower end of the actuator having a finger 2 shown in section in Figs. 6 and 9, the stud b vibrating the actuator in one and then in the opposite direction as the driver is depressed and rises for a purpose to be described. A The raceway comprises two plates a, a the lower edges of which contact with the flange a of 60 in Fig. 5 but with the nail support, nail- 7? the detail Fig. 3. The plates a, a are held together and to the extension by screws 0.. These plates are separated sufiiciently one from the other to form a channel in which may travel the shanks of the nails. The plate a has at its lower end a horizontal shoulder extension a and thereunder a horizontal groove a and an open slot a Each plate has a vertical recess a see Fig. .8, threaded at a? into which is secured the threaded upper end of a nose a The lower end of the plate a has a like shoulder a and slots 1 (L see Fig. 4, in alinement respectively with the slots a, a, and a recess, the counterpart of the recess a in plate a. The shoulder a of the ,plate a sustains a cover wedge-shaped, as shown in Figs. 4, and 7, to abut the rojection c at the lower end of the lip a of p ate 0,, the pro j ection forming a continuation of the lip a said cover having a passage 0 for the driver b the cover also having a driver passage c in alinement with the. passage 0 The cover has a notch 0 see Fig. '5, that receives the end of a locking device 'c pivotally secured in said notch by a dowel-pin c, the locking device having a pin 0 that is extended through a hole in the cover and enters a hole I c in the upper edge of the shoulder of, see

Figs. 6 and 9. When the pin of the locking device enters said hole, the cover is locked in its operative position, but the free end of the locking device may be raised sufficiently to withdraw the pin 0 from the hole 0 and thereafter the cover may be readily withdrawn to gain access to the nail-support.

Under the cover in the spacebetween the inner sides of the ends of the plates a M, I mount loosely the nail-support (1, shown -de tached and in plan view in Fig. 7 said support being provided at its inner end with a notch cl in which enters the shank of each nail as it leaves theraceway, see Fig. 5, said.

cover having a rib at its lower side notched as shown in Figs. 5 and 7 for the reception of a finger d shown as a lever pivoted at (1*, the inner end of said finger entering the notch in the under side of the nail-support and sliding the latter in one or the other direction at the proper times, as will be described.

The finger d occupies normally its operative-position, Figs. 4 and 6 with its inner end crossing the top of a detachable nail-guide d shown as tubular in shape and provided with a projection (1 the nail-guide being slotted longitudinally at one side as at d, the projection (1 being movable in the slot (1 the nail-guide taking its bearings in the recesses a above referred to.

When the driver occupies its elevated position, Figs. 1, 2, 4 and 5, the reduced lower end 2 of the actuator 11 stands in the position shown in Fig. 6, and at such time acts .upon the projection d of the nail-guide and forces the same to the left, Fig. 6, until the left-hand edge of said projection contacts with the shoulder 3 of the enlarged part of the slot 11, thus placing the open slot cl of the nail-guide in registering position with the raceway, as shown in Figs. 6 and 10. In this position the proj eotion f of a spring 7 attached to the actuator by a screw f occupies the position shown in Figs. 1 and 6, and in such position the nail-support occupies the position Fig. 5 and the endmost nail of the raceway leaves the raceway and enters slot (1 of the nail-guide and the notch in the nail-support, and the shank of the nail hangs verti c'ally in the nail-guide, as shown in Fig. 5. Now the driver-bar is struck a quick blow, the driver descends and the stud b carried thereby, working in the upper end of the slot of the actuatorquickly starts the actuator so that in th'e'begi'nning of its movement from the position Figs. 4 and 6 into the positions, Figs. 3 and 9, the lower end f of the spring acts immediately to turn the nail-guide from the position Figs. 6 and 10 into the positions Figs. 9 and 11, thus bringing the unslotted part of the cylindrical nail-guide between the nail suspended by the nail-support and the endmost nail in the raceway, and immediately thereafter, in the further downward movement of the driver, the projection 2 meets the outer free end of the finger and withdraws the nail-support from the head of the nail just prior to the time that the lower end of the driver meets the head of the nail, the driver in its descent driving the nail from the position Fig. 5 through the nose a into the stock.

As the driver-bar rises, after having driven a nail, the actuator is moved in the opposite direction, and the portion 2 shown in Fig. 9 is moved to the left into the position Fig. 6, and in so movingmeets a shoulder of the finger d and turns the latter far enough to project the notched end of the nailsupport into its normal nail-receiving position, Fig. 5.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In apparatus of the class described, a

raceway comprising two recessed plates, a

longitudinally slotted nail-guide mounted loosely in said recesses, a nail support slidably sustained by said raceway above said nail-guide, and a cover to overlap said nail support, said cover having a driver passage.

2. In apparatus of the class described, a raceway comprising two recessed plates and a longitudinally slotted tubular nail-guide rotatably mounted between said plates, a

cover sustained by said raceway, a nail-support sustained on said raceway under said cover, and means to slide said nail support to and fro to support and then release a nail at desired times.

3. In apparatus of the class described, 'a

raceway, a longitudinally slotted rotatable In testimony whereof, I have signed my nail-guide, and a cover, combined with a nail name to this specification, in the presence of support notched at its end and occupying two subscribing witnesses. normally a position with its notched end be- ELBERT A. PARKER.

5 tween said cover and the upper end of said Witnesses:

nail-guide, to sustain the head of a nail and CHARLES F. PooLEN,

position its shank in said nail-guide. WILLIAM H. SMITH. 

